Channels
#getting-started
- r
rook
03/24/2017, 4:37 PMok, great, thanks! - e
elect
03/24/2017, 4:56 PM@uhe just found out why the
from docs wasn't working, I was pasting inside another classsealed class - e
elect
03/24/2017, 4:57 PMtop level, no problems - u
uhe
03/24/2017, 6:32 PM@elect Ah,. Yeah, you're right. - m
maciejciemiega
03/24/2017, 7:19 PM@elect regarding your SO question. If that method (initializePrograms) is invoked in the superclass constructor, this is the behavior, class members are not initialized yet. I've posted an answer on SO. - e
elezium
03/24/2017, 11:39 PMHey folks. Is there a build system recommended over another (noob here)... Maven, Gradle? - m
minikloon
03/24/2017, 11:47 PMBoth work. Up to you. - m
minikloon
03/24/2017, 11:51 PMMaven is declarative and Gradle is imperative. Like Grunt and Gulp. - p
pniederw
03/25/2017, 1:44 AM@sam gradle build scripts can have imperative code, but that’s just building a declarative model. gradle has a stronger and more extensible model than maven. - p
pniederw
03/25/2017, 1:48 AMthat’s why maven can’t do incremental builds, distributed builds, etc. (its model isn’t strong enough) - r
ra1nmak3r
03/25/2017, 3:08 PM@User uploaded a file:and commented: There's any difference if I use 1.8 or 1.6? Performance impact or something else...targetjvm.png▾
- r
ra1nmak3r
03/25/2017, 3:42 PMThanks mate - a
Andreas Sinz
03/25/2017, 3:46 PM@ra1nmak3r and if you compile your program for java 8, you won't be able to run it on java6/7 - r
ra1nmak3r
03/25/2017, 3:47 PMI see. Same if I compile for Java 6? - r
ra1nmak3r
03/25/2017, 3:47 PMOr if I compile for Java 6 I will able to run it on Java 8? - a
Andreas Sinz
03/25/2017, 3:49 PMyes, if you compile it for java6, it will work on later version of the JVM like 7/8 - r
ra1nmak3r
03/25/2017, 3:51 PMHmm... Thanks, @Andreas Sinz - s
simon.vergauwen
03/26/2017, 7:10 AM@simon.vergauwen has left the channel - m
miha-x64
03/26/2017, 8:09 PMHow to deal with vararg annotation parameters? Got this for now:Copy code@IntDef(value = *longArrayOf(Gravity.LEFT.toLong(), Gravity.RIGHT.toLong(), ...)) - p
poohbar
03/26/2017, 8:59 PMwhats the most concise way to provide a default if a method call throws an exception?👀 1 - p
poohbar
03/26/2017, 8:59 PMCopy codeimage.pixelReader.getColor(x.toInt(), y.toInt()).brightness - p
poohbar
03/26/2017, 9:00 PM
throws exception if out of bounds and I would like to supplygetColor
in that case0 - m
miha-x64
03/26/2017, 9:13 PM@poohbar keep in mind that throwing an exception (actually, filling a stack trace) is quite expensive. Possible workaround may look like this:Copy codeinline fun <reified T : Throwable, R> execOrIfThrows(exec: ()->R, default: ()->R) = try { exec() } catch (e: Throwable) { // 'Reified type is forbidden for catch parameter' if (e is T) default() else throw e }Copy codeval color = execOrIfThrows<IndexOutOfBoundsException>({ image.pixelReader.getColor(x.toInt(), y.toInt()).brightness }, { 0 }) - m
miha-x64
03/26/2017, 9:16 PMPlease, use code snippets. You've hidden previous questions. Some bytecode issues were in YT. - p
poohbar
03/26/2017, 9:49 PMMike, I am not sure I understand. I am not the one throwing the exception.. What I was looking for was something like this:Copy code
Which I figured out after finding out that try..catch is an expressoin in Kotlinval brightness = try { image.pixelReader.getColor(x.toInt(), y.toInt()).brightness } catch (e: Exception) { 0.0 } - p
poohbar
03/26/2017, 9:50 PMWould your solution be faster? - s
sreich
03/26/2017, 10:06 PMHonestly why don't you just check the bounds? Or clamp➕ 2 - m
miha-x64
03/27/2017, 8:43 AM@poohbar my solution is just a wrapper around your one. - p
poohbar
03/27/2017, 10:36 AM@sreich I totally should. This was more of an exercise. @miha-x64 thank you 🙂 - m
mutexkid
03/27/2017, 5:56 PMdo we have a channel for code reviews for newcomers to kotlin?